Automatic packing adjuster



Aug: 1937. G. R. WEISZ 2,090,769

AUTOMATIC PACKING ADJUSTER Filed Sept. 19, 1934 I72 vent-0% 5/3 Fltovne Patented Aug. 24, 1937 9fl 76 2,090,769 AUTOMATIC PACKING ADJUSTER George R. Weisz, Brooklyn, N. Y. Application September 19, 1934, Serial No. 744,613 1 Claim. (01. 28626) The invention relates to stufilng boxes for pis- The modification of the packing adjuster shown ton rods or plunger pistons. used in connection in Figs. 2 and 3 has the same general configurawith steam or other engines, and more particution as the one described above especially as far larly to an automatic packing adjuster therefor. as its inner periphery is concerned; but in addi- 5 The invention has for its object the maintaintion thereto, a second recess 23 on its upper pe- 5 ing of a fluid tight joint between the piston and riphery is noted, presenting two faces 25 and 26 cylinder, and at the same time providing a comwhich are wedge shaped to the fibrous packing is. plete, continued and uniform lubrication of the This double action automatic packing adjuster piston; or in other words providing means for is shown made in two parts 27 and 28 held rigidly l0 preventing any leakage at the stufiing boxes of together by the bolts 29 in niches 39. Pressure piston ds or p u r pi t ns, especially those equalizing holes or apertures sl allow the presilsing g p e ure ids, 1 engines d for sure to be the same in both recesses 53, 23. p si as s r the like. As can be readily seen, not only is pressure as Ano h r object i t p vid m an f r u n at 32 exerted on the fibrous packing 58 through the packing t au ma a y djust itself s that the action or agency of the gland sleeve and its it l tightly emb a e the pa t or Parts adjacent tightening bolts 5, pressing the fibrous packing thereto; being pressed against the pis I10t against the piston rod or plunger piston, but bey y h p s ure th r on due to h gland ing directly exposed to the pressure of the fluid from the one side, but also pressed thereagainst in the pump or the like the fibrous packing is by the fluid pressure from the opposite side. doubly pressed against the piston. 20

O er O jects and advantages of the p es The pressure finds its way from the fluid presinvention will be apparent from the following deure chamber through the cut away portion 20; scription, reference being had to the accompanyec nd cut away portion may be made as at ing drawing wherein the preferred embodiment 2! at the outer periphery 24 if desired. The

0f h inVentiOn is Clearly Shown, and wherein arrows 33 indicate the direction of the fluid pres- 25 similar numerals of reference denote similar parts ur coming through the cut away portion 26 i th u ou he s ve a eW and show this pressure striking the flexible por- Referring W t the Said draWingI tion H; the main portion of the fibrous packing Figure 1 i a i e lev i n. p r ly cut aw y being held fixed. As aforesaid the fluid pressure 0 and showing a longitudinal cross section with may ct through both recesses i3 and 23, the the invention in place. pressure being equalized in both recesses through Fig. 2 is a side elevation of a modification of th apertures or small holes 3!. the invention shown in Fig. 1, with part of the I placing the fibrous packing in the stuffing Same C1113 w y (along the line in box against the adjuster, pressure is applied to 35 nd show a le a n packing adjuster. the gland sleeve 4 in order to shape the fibrous 35 3 is a front W of Fig. the line packing to the angle of taper, which may vary referring more particularly to the parts Cut as desired, and then the pressure is slightly rebrOkeIl y in g. 2. lieved to reduce friction. Friction is reduced to The invention s constructed and operated a minimum on the return stroke of piston rod or 40 St t y and preferably as follows? plunger piston on account of there being no pres- I is the smiling box wall, 2 the piston, 4 the sure exerted on the packing during this Opera" gland sleeve, 5 the tightening bolts therefor, 5 {@011 There is no Wear on the adjuster as it the nut and i the washer thereof The packing dses not Come in Contact with any moving parts adjuster comprises a ring e t side I i As my invention is in some of its parts generic, r

b.eve1ed mwardly i a i g I do not limit myself to the particular construcriphery f fif efl gg d1 if g fi tion shown and described, but also contemplate sv itl a it s on bosit 223 i? ar i d do ined roof I6 is the employment of such equivalents as fairly fall large enough to permit a portion H of the fibrous Wlthm t Scope 9 the t t t th h packing l8 to be forced into the recess. In thls connectlon'l a 5 a 6 11a 6 ape 50 The opposite side I9 of the r ng of the adjuster of the recess shQWn F 1 can P 11 1n the is fiat and at its inner periphery I 2 as at 29 it aduster shown 1n Figs. 2 and 3, t e pressure equalizing holes (it may be made or drilled in I is cut away, so that the diameter of this inner I periphery is slightly greater than the diameter the neck of the annular wedge shaped portion of the piston rod or plunger piston. instead of in the outer periphery thereof; and 55 juster, said ring having an overhanging pointed wedge shaped member spaced from the edge of the packing, and so constructed and arranged that when the packing is compressed in wedge shaped form part thereof will project partially beyond said member into the opening of said recess and present a packing flange so that when pressure enters said recess it will act on said flange for forcing the same away from said ring radially inward.

GEORGE R. WEISZ. 

